Ubuntu Security Update USN-6055-1: Ruby vulnerabilities

[LinuxBot]

It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. (CVE-2023-28755) It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. This issue is being addressed only for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2023-28756)

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